Action: Optimize WAN accelerators and other network devices If your organization's network uses WAN acceleration and caching ...

Action: Optimize WAN accelerators and other network devices  If your organization's network uses WAN acceleration and caching devices, you may encounter issues when users access the Office 365 services. For example, Office 365 services encrypt some Office 365 content and the TCP header. Your device may not be able to handle this type of traffic. To avoid network issues, you may need to optimize your network device or devices to ensure that your users have a consistent experience when accessing Office 365. As described here, Microsoft does not provide first-party technical customer support for the integration and use of WAN devices with Office 365. Contact your appliance provider for optimization solutions. Learn more at Plan for network devices that connect to Office 365 services.